CVE-2026-68162

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68162", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.372Z", "datePublished": "2026-08-10T11:59:29.099Z", "dateUpdated": "2026-10-19T20:58:55.689Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-23T12:46:01.222Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid auth_enable sysctl UAF during netns teardown\n\nproc_sctp_do_auth() updates the SCTP control socket after changing\nnet.sctp.auth_enable. The handler gets the per-net SCTP state from\nctl->data, so an already opened sysctl file can still target a network\nnamespace while that namespace is being torn down.\n\nSCTP previously registered its per-net sysctls from sctp_defaults_init(),\nwhile the control socket is created later from sctp_ctrlsock_init(). This\nexposed a window during initialization where auth_enable was writable\nbefore net->sctp.ctl_sock existed, and a teardown window where auth_enable\nstayed writable after inet_ctl_sock_destroy() had released the control\nsocket.\n\nMove the per-net SCTP sysctl registration into sctp_ctrlsock_init() after\nsctp_ctl_sock_init() succeeds, and unregister the sysctl table before\ndestroying the control socket in sctp_ctrlsock_exit(). If sysctl\nregistration fails after the control socket was created, destroy the\ncontrol socket in the same init path.\n\nMake sctp_sysctl_net_unregister() tolerate a missing header and clear the\nsaved pointer so init-error and exit paths can safely share the unregister\nhelper."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is triggered only by writing the per-net sysctl net.sctp.auth_enable via /proc/sys (proc_sctp_do_auth); it is not reachable from SCTP packet receive, sockets, or other remote protocol paths.\nAC:L - An attacker can open the sysctl file, concurrently destroy the target network namespace, and repeatedly write during teardown; pernet exit destroys ctl_sock before unregistering sysctls, and the attacker controls both sides of that race.\nPR:L - Exploitation requires writing a mode 0644 sysctl in a network namespace; an unprivileged host user with CAP_NET_ADMIN via user namespaces can create a netns, become namespace root, and write net/sctp/auth_enable without init-namespace privileges.\nUI:N - No victim interaction is required beyond the attacker opening the sysctl and triggering namespace teardown in their own threads or processes.\nS:U - Impact is confined to kernel memory corruption and privilege escalation within the same host/kernel security domain; it does not cross VM, container, or IOMMU boundaries by itself.\nC:H - proc_sctp_do_auth dereferences net->sctp.ctl_sock after inet_ctl_sock_destroy; lock_sock and sctp_sk(sk)->ep access freed socket/endpoint memory, a use-after-free that can disclose or infer heap contents.\nI:H - On a successful write, the handler sets sctp_sk(sk)->ep->auth_enable on a freed endpoint object, giving a controlled heap write primitive that can be developed into arbitrary kernel modification or code execution.\nA:H - Use-after-free on the SCTP control socket/endpoint during sysctl processing can cause kernel oops/panic from lock_sock or ep access on freed memory, even when full exploitation is not attempted."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sctp/protocol.c", "net/sctp/sysctl.c"], "versions": [{"version": "10c869a52f266e40f548cc3c565d14930a5edafc", "lessThan": "19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4", "status": "affected", "versionType": "git"}, {"version": "dc583e7e5f8515ca489c0df28e4362a70eade382", "lessThan": "ceb7190b5c873d4a1267a1600c5aa52c600e929f", "status": "affected", "versionType": "git"}, {"version": "bd2a2939423566c654545fa3e96a656662a0af9e", "lessThan": "fd66854a22661929245f3d2b244c432bc8b1a150", "status": "affected", "versionType": "git"}, {"version": "1b67030d39f2b00f94ac1f0af11ba6657589e4d3", "lessThan": "158f3cc332dc53f43ec20060233d7c3cecd6d912", "status": "affected", "versionType": "git"}, {"version": "7ec30c54f339c640aa7e49d7e9f7bbed6bd42bf6", "lessThan": "66700c0719675e0e118ae83b2d7168dacd69dd3d", "status": "affected", "versionType": "git"}, {"version": "c184bc621e3cef03ac9ba81a50dda2dae6a21d36", "lessThan": "626bda8cfe43dff19a9833ff6ba055a817b5455c", "status": "affected", "versionType": "git"}, {"version": "15649fd5415eda664ef35780c2013adeb5d9c695", "lessThan": "be6aae9d1b91c603adb35872d37d40e83daf8758", "status": "affected", "versionType": "git"}, {"version": "15649fd5415eda664ef35780c2013adeb5d9c695", "lessThan": "a50e73488e0bbdd262b3be3c9a1d8dd078382381", "status": "affected", "versionType": "git"}, {"version": "15649fd5415eda664ef35780c2013adeb5d9c695", "lessThan": "f8d5e7846025f4ab15a461235f8ebae9094a361a", "status": "affected", "versionType": "git"}, {"version": "5.4.290", "lessThan": "5.4.292", "status": "affected", "versionType": "semver"}, {"version": "5.10.234", "lessThan": "5.10.266", "status": "affected", "versionType": "semver"}, {"version": "5.15.177", "lessThan": "5.15.217", "status": "affected", "versionType": "semver"}, {"version": "6.1.125", "lessThan": "6.1.184", "status": "affected", "versionType": "semver"}, {"version": "6.6.72", "lessThan": "6.6.151", "status": "affected", "versionType": "semver"}, {"version": "6.12.10", "lessThan": "6.12.101", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sctp/protocol.c", "net/sctp/sysctl.c"], "versions": [{"version": "6.13", "status": "affected"}, {"version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.292", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.266", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.217", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.184", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.290", "versionEndExcluding": "5.4.292"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.234", "versionEndExcluding": "5.10.266"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.177", "versionEndExcluding": "5.15.217"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.125", "versionEndExcluding": "6.1.184"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.72", "versionEndExcluding": "6.6.151"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.10", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4"}, {"url": "https://git.kernel.org/stable/c/ceb7190b5c873d4a1267a1600c5aa52c600e929f"}, {"url": "https://git.kernel.org/stable/c/fd66854a22661929245f3d2b244c432bc8b1a150"}, {"url": "https://git.kernel.org/stable/c/158f3cc332dc53f43ec20060233d7c3cecd6d912"}, {"url": "https://git.kernel.org/stable/c/66700c0719675e0e118ae83b2d7168dacd69dd3d"}, {"url": "https://git.kernel.org/stable/c/626bda8cfe43dff19a9833ff6ba055a817b5455c"}, {"url": "https://git.kernel.org/stable/c/be6aae9d1b91c603adb35872d37d40e83daf8758"}, {"url": "https://git.kernel.org/stable/c/a50e73488e0bbdd262b3be3c9a1d8dd078382381"}, {"url": "https://git.kernel.org/stable/c/f8d5e7846025f4ab15a461235f8ebae9094a361a"}], "title": "sctp: avoid auth_enable sysctl UAF during netns teardown", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68162", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:45:25.940723Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T20:58:55.689Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68162", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:45:25.940723Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:45:26.599Z"}}], "cna": {"title": "sctp: avoid auth_enable sysctl UAF during netns teardown", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is triggered only by writing the per-net sysctl net.sctp.auth_enable via /proc/sys (proc_sctp_do_auth); it is not reachable from SCTP packet receive, sockets, or other remote protocol paths.\nAC:L - An attacker can open the sysctl file, concurrently destroy the target network namespace, and repeatedly write during teardown; pernet exit destroys ctl_sock before unregistering sysctls, and the attacker controls both sides of that race.\nPR:L - Exploitation requires writing a mode 0644 sysctl in a network namespace; an unprivileged host user with CAP_NET_ADMIN via user namespaces can create a netns, become namespace root, and write net/sctp/auth_enable without init-namespace privileges.\nUI:N - No victim interaction is required beyond the attacker opening the sysctl and triggering namespace teardown in their own threads or processes.\nS:U - Impact is confined to kernel memory corruption and privilege escalation within the same host/kernel security domain; it does not cross VM, container, or IOMMU boundaries by itself.\nC:H - proc_sctp_do_auth dereferences net->sctp.ctl_sock after inet_ctl_sock_destroy; lock_sock and sctp_sk(sk)->ep access freed socket/endpoint memory, a use-after-free that can disclose or infer heap contents.\nI:H - On a successful write, the handler sets sctp_sk(sk)->ep->auth_enable on a freed endpoint object, giving a controlled heap write primitive that can be developed into arbitrary kernel modification or code execution.\nA:H - Use-after-free on the SCTP control socket/endpoint during sysctl processing can cause kernel oops/panic from lock_sock or ep access on freed memory, even when full exploitation is not attempted."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "10c869a52f266e40f548cc3c565d14930a5edafc", "lessThan": "19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4", "versionType": "git"}, {"status": "affected", "version": "dc583e7e5f8515ca489c0df28e4362a70eade382", "lessThan": "ceb7190b5c873d4a1267a1600c5aa52c600e929f", "versionType": "git"}, {"status": "affected", "version": "bd2a2939423566c654545fa3e96a656662a0af9e", "lessThan": "fd66854a22661929245f3d2b244c432bc8b1a150", "versionType": "git"}, {"status": "affected", "version": "1b67030d39f2b00f94ac1f0af11ba6657589e4d3", "lessThan": "158f3cc332dc53f43ec20060233d7c3cecd6d912", "versionType": "git"}, {"status": "affected", "version": "7ec30c54f339c640aa7e49d7e9f7bbed6bd42bf6", "lessThan": "66700c0719675e0e118ae83b2d7168dacd69dd3d", "versionType": "git"}, {"status": "affected", "version": "c184bc621e3cef03ac9ba81a50dda2dae6a21d36", "lessThan": "626bda8cfe43dff19a9833ff6ba055a817b5455c", "versionType": "git"}, {"status": "affected", "version": "15649fd5415eda664ef35780c2013adeb5d9c695", "lessThan": "be6aae9d1b91c603adb35872d37d40e83daf8758", "versionType": "git"}, {"status": "affected", "version": "15649fd5415eda664ef35780c2013adeb5d9c695", "lessThan": "a50e73488e0bbdd262b3be3c9a1d8dd078382381", "versionType": "git"}, {"status": "affected", "version": "15649fd5415eda664ef35780c2013adeb5d9c695", "lessThan": "f8d5e7846025f4ab15a461235f8ebae9094a361a", "versionType": "git"}, {"status": "affected", "version": "5.4.290", "lessThan": "5.4.292", "versionType": "semver"}, {"status": "affected", "version": "5.10.234", "lessThan": "5.10.266", "versionType": "semver"}, {"status": "affected", "version": "5.15.177", "lessThan": "5.15.217", "versionType": "semver"}, {"status": "affected", "version": "6.1.125", "lessThan": "6.1.184", "versionType": "semver"}, {"status": "affected", "version": "6.6.72", "lessThan": "6.6.151", "versionType": "semver"}, {"status": "affected", "version": "6.12.10", "lessThan": "6.12.101", "versionType": "semver"}], "programFiles": ["net/sctp/protocol.c", "net/sctp/sysctl.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"status": "unaffected", "version": "0", "lessThan": "6.13", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.292", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.266", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.217", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.184", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.151", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.101", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.42", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.6", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/sctp/protocol.c", "net/sctp/sysctl.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4"}, {"url": "https://git.kernel.org/stable/c/ceb7190b5c873d4a1267a1600c5aa52c600e929f"}, {"url": "https://git.kernel.org/stable/c/fd66854a22661929245f3d2b244c432bc8b1a150"}, {"url": "https://git.kernel.org/stable/c/158f3cc332dc53f43ec20060233d7c3cecd6d912"}, {"url": "https://git.kernel.org/stable/c/66700c0719675e0e118ae83b2d7168dacd69dd3d"}, {"url": "https://git.kernel.org/stable/c/626bda8cfe43dff19a9833ff6ba055a817b5455c"}, {"url": "https://git.kernel.org/stable/c/be6aae9d1b91c603adb35872d37d40e83daf8758"}, {"url": "https://git.kernel.org/stable/c/a50e73488e0bbdd262b3be3c9a1d8dd078382381"}, {"url": "https://git.kernel.org/stable/c/f8d5e7846025f4ab15a461235f8ebae9094a361a"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid auth_enable sysctl UAF during netns teardown\n\nproc_sctp_do_auth() updates the SCTP control socket after changing\nnet.sctp.auth_enable. The handler gets the per-net SCTP state from\nctl->data, so an already opened sysctl file can still target a network\nnamespace while that namespace is being torn down.\n\nSCTP previously registered its per-net sysctls from sctp_defaults_init(),\nwhile the control socket is created later from sctp_ctrlsock_init(). This\nexposed a window during initialization where auth_enable was writable\nbefore net->sctp.ctl_sock existed, and a teardown window where auth_enable\nstayed writable after inet_ctl_sock_destroy() had released the control\nsocket.\n\nMove the per-net SCTP sysctl registration into sctp_ctrlsock_init() after\nsctp_ctl_sock_init() succeeds, and unregister the sysctl table before\ndestroying the control socket in sctp_ctrlsock_exit(). If sysctl\nregistration fails after the control socket was created, destroy the\ncontrol socket in the same init path.\n\nMake sctp_sysctl_net_unregister() tolerate a missing header and clear the\nsaved pointer so init-error and exit paths can safely share the unregister\nhelper."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.292", "versionStartIncluding": "5.4.290"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.266", "versionStartIncluding": "5.10.234"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.217", "versionStartIncluding": "5.15.177"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.184", "versionStartIncluding": "6.1.125"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.151", "versionStartIncluding": "6.6.72"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.101", "versionStartIncluding": "6.12.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.42", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.6", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "6.13"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-23T12:46:01.222Z"}}}, "cveMetadata": {"cveId": "CVE-2026-68162", "state": "PUBLISHED", "dateUpdated": "2026-10-19T20:58:55.689Z", "dateReserved": "2026-07-30T09:28:09.372Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-10T11:59:29.099Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/sctp/protocol.c", "net/sctp/sysctl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4", "status": "affected", "version": "10c869a52f266e40f548cc3c565d14930a5edafc", "versionType": "git"}, {"lessThan": "ceb7190b5c873d4a1267a1600c5aa52c600e929f", "status": "affected", "version": "dc583e7e5f8515ca489c0df28e4362a70eade382", "versionType": "git"}, {"lessThan": "fd66854a22661929245f3d2b244c432bc8b1a150", "status": "affected", "version": "bd2a2939423566c654545fa3e96a656662a0af9e", "versionType": "git"}, {"lessThan": "158f3cc332dc53f43ec20060233d7c3cecd6d912", "status": "affected", "version": "1b67030d39f2b00f94ac1f0af11ba6657589e4d3", "versionType": "git"}, {"lessThan": "66700c0719675e0e118ae83b2d7168dacd69dd3d", "status": "affected", "version": "7ec30c54f339c640aa7e49d7e9f7bbed6bd42bf6", "versionType": "git"}, {"lessThan": "626bda8cfe43dff19a9833ff6ba055a817b5455c", "status": "affected", "version": "c184bc621e3cef03ac9ba81a50dda2dae6a21d36", "versionType": "git"}, {"lessThan": "be6aae9d1b91c603adb35872d37d40e83daf8758", "status": "affected", "version": "15649fd5415eda664ef35780c2013adeb5d9c695", "versionType": "git"}, {"lessThan": "a50e73488e0bbdd262b3be3c9a1d8dd078382381", "status": "affected", "version": "15649fd5415eda664ef35780c2013adeb5d9c695", "versionType": "git"}, {"lessThan": "f8d5e7846025f4ab15a461235f8ebae9094a361a", "status": "affected", "version": "15649fd5415eda664ef35780c2013adeb5d9c695", "versionType": "git"}, {"lessThan": "5.4.292", "status": "affected", "version": "5.4.290", "versionType": "semver"}, {"lessThan": "5.10.266", "status": "affected", "version": "5.10.234", "versionType": "semver"}, {"lessThan": "5.15.217", "status": "affected", "version": "5.15.177", "versionType": "semver"}, {"lessThan": "6.1.184", "status": "affected", "version": "6.1.125", "versionType": "semver"}, {"lessThan": "6.6.151", "status": "affected", "version": "6.6.72", "versionType": "semver"}, {"lessThan": "6.12.101", "status": "affected", "version": "6.12.10", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/sctp/protocol.c", "net/sctp/sysctl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"lessThan": "6.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.292", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.266", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.217", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.184", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.151", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid auth_enable sysctl UAF during netns teardown\n\nproc_sctp_do_auth() updates the SCTP control socket after changing\nnet.sctp.auth_enable. The handler gets the per-net SCTP state from\nctl->data, so an already opened sysctl file can still target a network\nnamespace while that namespace is being torn down.\n\nSCTP previously registered its per-net sysctls from sctp_defaults_init(),\nwhile the control socket is created later from sctp_ctrlsock_init(). This\nexposed a window during initialization where auth_enable was writable\nbefore net->sctp.ctl_sock existed, and a teardown window where auth_enable\nstayed writable after inet_ctl_sock_destroy() had released the control\nsocket.\n\nMove the per-net SCTP sysctl registration into sctp_ctrlsock_init() after\nsctp_ctl_sock_init() succeeds, and unregister the sysctl table before\ndestroying the control socket in sctp_ctrlsock_exit(). If sysctl\nregistration fails after the control socket was created, destroy the\ncontrol socket in the same init path.\n\nMake sctp_sysctl_net_unregister() tolerate a missing header and clear the\nsaved pointer so init-error and exit paths can safely share the unregister\nhelper."}], "id": "CVE-2026-68162", "lastModified": "2026-10-19T21:17:56.770", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-68162", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:45:25.940723Z", "version": "2.0.3"}}]}, "published": "2026-08-10T13:20:02.570", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/158f3cc332dc53f43ec20060233d7c3cecd6d912"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/626bda8cfe43dff19a9833ff6ba055a817b5455c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/66700c0719675e0e118ae83b2d7168dacd69dd3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a50e73488e0bbdd262b3be3c9a1d8dd078382381"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/be6aae9d1b91c603adb35872d37d40e83daf8758"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ceb7190b5c873d4a1267a1600c5aa52c600e929f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f8d5e7846025f4ab15a461235f8ebae9094a361a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fd66854a22661929245f3d2b244c432bc8b1a150"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: Linux kernel: SCTP Use-After-Free vulnerability during network namespace teardown", "id": "2513314", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513314"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nsctp: avoid auth_enable sysctl UAF during netns teardown\nproc_sctp_do_auth() updates the SCTP control socket after changing\nnet.sctp.auth_enable. The handler gets the per-net SCTP state from\nctl->data, so an already opened sysctl file can still target a network\nnamespace while that namespace is being torn down.\nSCTP previously registered its per-net sysctls from sctp_defaults_init(),\nwhile the control socket is created later from sctp_ctrlsock_init(). This\nexposed a window during initialization where auth_enable was writable\nbefore net->sctp.ctl_sock existed, and a teardown window where auth_enable\nstayed writable after inet_ctl_sock_destroy() had released the control\nsocket.\nMove the per-net SCTP sysctl registration into sctp_ctrlsock_init() after\nsctp_ctl_sock_init() succeeds, and unregister the sysctl table before\ndestroying the control socket in sctp_ctrlsock_exit(). If sysctl\nregistration fails after the control socket was created, destroy the\ncontrol socket in the same init path.\nMake sctp_sysctl_net_unregister() tolerate a missing header and clear the\nsaved pointer so init-error and exit paths can safely share the unregister\nhelper.", "A flaw was found in the Stream Control Transmission Protocol (SCTP) implementation within the Linux kernel. This Use-After-Free (UAF) vulnerability occurs during network namespace (netns) teardown. A local attacker with the ability to open a sysctl file could exploit this flaw, potentially leading to a system crash or other undefined behavior due to memory corruption."], "name": "CVE-2026-68162", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T11:59:29Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68162\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68162\nhttps://git.kernel.org/stable/c/19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4\nhttps://git.kernel.org/stable/c/626bda8cfe43dff19a9833ff6ba055a817b5455c\nhttps://git.kernel.org/stable/c/66700c0719675e0e118ae83b2d7168dacd69dd3d\nhttps://git.kernel.org/stable/c/a50e73488e0bbdd262b3be3c9a1d8dd078382381\nhttps://git.kernel.org/stable/c/be6aae9d1b91c603adb35872d37d40e83daf8758\nhttps://git.kernel.org/stable/c/f8d5e7846025f4ab15a461235f8ebae9094a361a"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[10c869a52f266e40f548cc3c565d14930a5edafc,19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7ec30c54f339c640aa7e49d7e9f7bbed6bd42bf6,66700c0719675e0e118ae83b2d7168dacd69dd3d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "626bda8cfe43dff19a9833ff6ba055a817b5455c"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[15649fd5415eda664ef35780c2013adeb5d9c695,be6aae9d1b91c603adb35872d37d40e83daf8758)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[15649fd5415eda664ef35780c2013adeb5d9c695,a50e73488e0bbdd262b3be3c9a1d8dd078382381)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[15649fd5415eda664ef35780c2013adeb5d9c695,f8d5e7846025f4ab15a461235f8ebae9094a361a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "dc583e7e5f8515ca489c0df28e4362a70eade382"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "bd2a2939423566c654545fa3e96a656662a0af9e"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "1b67030d39f2b00f94ac1f0af11ba6657589e4d3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.4.290,5.4.292)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.72,6.6.151)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.10,6.12.101)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[5.10.234,5.11)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[5.15.177,5.16)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[6.1.125,6.2)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.4.292,5.5.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.151,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T19:15:17.559692+00:00", "updated": "2026-10-20T13:30:06.281364+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}